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Home/ Questions/Q 1002225
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Editorial Team
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Editorial Team
Asked: May 16, 20262026-05-16T07:48:03+00:00 2026-05-16T07:48:03+00:00

How do I call a class from a string containing that class name inside

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How do I call a class from a string containing that class name inside of it? (I guess I could do case/when but that seems ugly.)

The reason I ask is because I’m using the acts_as_commentable plugin, among others, and these store the commentable_type as a column. I want to be able to call whatever particular commentable class to do a find(commentable_id) on it.

Thanks.

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  1. Editorial Team
    Editorial Team
    2026-05-16T07:48:04+00:00Added an answer on May 16, 2026 at 7:48 am

    I think what you want is constantize

    That’s an RoR construct. I don’t know if there’s one for ruby core

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